修复: UX扩展审查P0批(后端git/路径确定性bug + 前端UI + 编译阻断)

后端(src-tauri):

- project.rs: 4处空if目录校验补return Err(import/relocate/scan_directory/scan_project_with_ai),目录不存在不再静默放行

- ai/tools/git.rs: exec_git改返(String,bool)治git_commit·git_branch create/switch假成功 + git_merge补失败分支 + 加CREATE_NO_WINDOW

- module.rs: run_git_cmd加CREATE_NO_WINDOW,治Windows cmd黑窗闪烁(原问题9)

前端:

- DependencyGraph.vue: 环检测高亮注入renderGraph,原被fromJSON重建抹除致功能失效

- FileExplorer.vue: 工程下拉closeDropdown加closest判定,原打不开

附(预存编译阻断顺带修):

- df-nodes ai_node_helpers.rs: extract_first_json_object临时值借用悬垂E0716

- MessageList.vue: 删isLastUser死代码(vue-tsc TS6133)

审查产出: docs/05-代码审查/UIUX扩展审查-2026-08-02.md(80条发现,8高grep核验全属实)+ docs/todo.md批次段

src/components/project/DependencyGraph.vue

@@ -63,6 +63,7 @@ import { useRouter } from 'vue-router'
 import { Graph, Selection, Snapline, History, Scroller, MiniMap } from '@antv/x6'
 import dagre from 'dagre'
 import '@antv/x6-vue-shape'
+import { Message } from '@arco-design/web-vue'
 import { moduleApi, type ProjectModuleRecord, type ModuleDependencyRecord } from '@/api/module'
 import ModuleNode from './ModuleNode.vue'
 
@@ -141,6 +142,7 @@ function renderGraph() {
   // 映射回 X6 节点格式
   const nodes = modules.value.map(m => {
     const pos = g.node(m.id)
+    const isCycle = cycleNodes.value.has(m.id)
     return {
       id: m.id,
       shape: 'vue-shape',
@@ -155,6 +157,11 @@ function renderGraph() {
         stack: m.stack,
         gitUrl: m.git_url,
       },
+      // 环节点高亮(红框);renderGraph 是画布唯一渲染入口,高亮必须在这里注入,
+      // 否则会被 graph.fromJSON 整体替换抹除。
+      attrs: isCycle ? {
+        body: { stroke: '#e05050', strokeWidth: 3 },
+      } : undefined,
     }
   })
 
@@ -218,20 +225,17 @@ const cycleNodes = ref<Set<string>>(new Set())
 async function checkCycles() {
   try {
     const cycles = await moduleApi.detectModuleCycles(props.projectId)
+    // 收集环节点 id,交给 renderGraph 统一渲染高亮(避免 cell.attr 被 fromJSON 抹除)。
     cycleNodes.value = new Set(cycles)
-    if (cycles.length > 0) {
-      // 高亮环节点(加红色边框)
-      for (const id of cycles) {
-        const cell = graph?.getCellById(id)
-        if (cell) {
-          cell.attr('body/stroke', '#e05050')
-          cell.attr('body/strokeWidth', 3)
-        }
-      }
-    }
     renderGraph()
+    if (cycles.length > 0) {
+      Message.warning(`检测到 ${cycles.length} 个环节点(已红框高亮)`)
+    } else {
+      Message.success('未检测到环形依赖')
+    }
   } catch (e) {
     console.error('[DependencyGraph] 环检测失败:', e)
+    Message.error('环检测失败')
   }
 }